A379496 - cp's OEIS frontend

A379496 a(n) = A019565(1+n) - A019565(A001065(n)), where A019565 is the base-2 exp-function, and A001065 is the sum of proper divisors of n.

n	a(n)
1	2
2	4
3	3
4	4
5	13
6	15
7	5
8	-16
9	16
10	35
11	33
12	59
13	103
14	189
15	-3
16	-188
17	31
18	-44
19	53
20	-55
21	123
22	225
23	75
24	89
25	216
26	451
27	315
28	385
29	1153
30	2037
31	11
32	-2284
33	-171
34	23
35	-5
36	-4160
37	193
38	225
39	69
40	-247
41	271
42	-1599
43	453
44	819
45	1339
46	2499
47	141
48	-309
49	422
50	312
51	605
52	65
53	2143
54	4239
55	979
56	1985
57	2673
58	5993
59	5003
60	2275
61	15013
62	29991
63	-165

[2, 4, 3, 4, 13, 15, 5, -16, 16, 35, 33, 59, 103, 189, -3, -188, 31, -44, 53, -55, 123, 225, 75, 89, 216, 451, 315, 385, 1153, 2037, 11, -2284, -171, 23, -5, -4160, 193, 225, 69, -247, 271, -1599, 453, 819, 1339, 2499, 141, -309, 422, 312, 605, 65, 2143, 4239, 979, 1985, 2673, 5993, 5003, 2275, 15013, 29991, -165]

cp's OEIS Frontend

A379496 a(n) = A019565(1+n) - A019565(A001065(n)), where A019565 is the base-2 exp-function, and A001065 is the sum of proper divisors of n.

Table of values

List of values